Myocarditis – an inflammation of the heart muscle – was identified during the Covid-19 vaccination campaign as a rare side effect of mRNA vaccines, particularly in young men. A French study looked at the outcomes of patients suffering from such a condition. Its conclusions, published Monday in the journal “JAMA”, are now intended to be very reassuring.
Researchers from the Epi-Phare group, which brings together the Health Insurance and the National Agency for the Safety of Medicines, identified 4,635 patients aged 12 to 49 hospitalized in France for myocarditis during the 18 months that constituted the heart of the vaccination campaign against Covid. Among them, 558 had post-vaccination myocarditis – that is, in the week following receipt of the vaccine – and 298 had post-Covid-19 myocarditis – that is, in the month following infection with the coronavirus.
